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Effects of unsaponifiable matter (USM) from perilla seed meal on the production of reactive oxygen species (ROS) in Hs68 cells. UVB, Ultraviolet B. Each value is expressed as the mean ± standard error (n = 3). Significance was tested using Tukey’s test. ### p < 0.001 versus the non-irradiated control. *** p < 0.001 versus the UVB-irradiated control.
